Chantilly High School is home to four years of study, 9th–12th grade. It is organized into five different "subschools" which each provide administration for a different group of students. Subschool 5 consists of the Chantilly Center, a special-education co-facility which serves students from a wider geographical area than the rest of Chantilly High School. The school uses a block scheduling system
. Chantilly has a high percentage of students enrolled in advanced placement (AP), honors class and dual enrollment (DE) courses. Chantilly is also a member of the largest public school system in Virginia. Chantilly High School is also home to Chantilly Academy. Chantilly Academy offers classes for students in the FCPS school district, including culinary, engineering, Auto Tech, Cisco Networking, and Cosmetology. A full listing of classes may be found at their web site. The Academy is home to Chantilly Robotics, a FIRST robotics team participating in the FIRST Robotics Competition, composed of students from around FCPS. Chantilly Academy is also home to VA-20012, Chantilly Academy Air Force Junior ROTC (Reserve Officer Training Corp). The mission of the program is to build better citizens through the practice of leadership. The program is also proud to have one of the states highest achieving Drill Team and Color Guards.
